Lulu is an EMT tech who she wants to learn more about stethoscopes. Dr. Lia lectures her on the subject showing different types of stethoscopes to Lulu and shows how it works using her as a patient. First Lulu takes off her t-shirt but keeps her bra on and Lia shows her how to perform lung and heart auscultation. They perform it in a standing position. Later Lulu takes off her bra and Lia continues the lesson on her. A very nice stethoscope video with auscultation of lungs and hearts with many different stethoscopes.